{"schema_version":"1.7.2","id":"OESA-2026-1944","modified":"2026-04-17T13:01:16Z","published":"2026-04-17T13:01:16Z","upstream":["CVE-2026-4424","CVE-2026-4426","CVE-2026-5121"],"summary":"libarchive security update","details":"is an open-source BSD-licensed C programming library that  provides streaming access to a variety of different archive formats, including tar, cpio, pax, zip, and ISO9660 images. The distribution  also includes bsdtar and bsdcpio, full-featured implementations of  tar and cpio that use .\r\n\r\nSecurity Fix(es):\n\nA flaw was found in libarchive. This heap out-of-bounds read vulnerability exists in the RAR archive processing logic due to improper validation of the LZSS sliding window size after transitions between compression methods. A remote attacker can exploit this by providing a specially crafted RAR archive, leading to the disclosure of sensitive heap memory information without requiring authentication or user interaction.(CVE-2026-4424)\n\nA flaw was found in libarchive. An Undefined Behavior vulnerability exists in the zisofs decompression logic, caused by improper validation of a field (`pz_log2_bs`) read from ISO9660 Rock Ridge extensions. A remote attacker can exploit this by supplying a specially crafted ISO file. This can lead to incorrect memory allocation and potential application crashes, resulting in a denial-of-service (DoS) condition.(CVE-2026-4426)\n\nA flaw was found in libarchive. On 32-bit systems, an integer overflow vulnerability exists in the zisofs block pointer allocation logic. A remote attacker can exploit this by providing a specially crafted ISO9660 image, which can lead to a heap buffer overflow. This could potentially allow for arbitrary code execution on the affected system.(CVE-2026-5121)","affected":[{"package":{"ecosystem":"openEuler:24.03-LTS-SP2","name":"libarchive","purl":"pkg:rpm/openEuler/libarchive&distro=openEuler-24.03-LTS-SP2"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.7.1-11.oe2403sp2"}]}],"ecosystem_specific":{"aarch64":["bsdcat-3.7.1-11.oe2403sp2.aarch64.rpm","bsdcpio-3.7.1-11.oe2403sp2.aarch64.rpm","bsdtar-3.7.1-11.oe2403sp2.aarch64.rpm","bsdunzip-3.7.1-11.oe2403sp2.aarch64.rpm","libarchive-3.7.1-11.oe2403sp2.aarch64.rpm","libarchive-debuginfo-3.7.1-11.oe2403sp2.aarch64.rpm","libarchive-debugsource-3.7.1-11.oe2403sp2.aarch64.rpm","libarchive-devel-3.7.1-11.oe2403sp2.aarch64.rpm"],"noarch":["libarchive-help-3.7.1-11.oe2403sp2.noarch.rpm"],"src":["libarchive-3.7.1-11.oe2403sp2.src.rpm"],"x86_64":["bsdcat-3.7.1-11.oe2403sp2.x86_64.rpm","bsdcpio-3.7.1-11.oe2403sp2.x86_64.rpm","bsdtar-3.7.1-11.oe2403sp2.x86_64.rpm","bsdunzip-3.7.1-11.oe2403sp2.x86_64.rpm","libarchive-3.7.1-11.oe2403sp2.x86_64.rpm","libarchive-debuginfo-3.7.1-11.oe2403sp2.x86_64.rpm","libarchive-debugsource-3.7.1-11.oe2403sp2.x86_64.rpm","libarchive-devel-3.7.1-11.oe2403sp2.x86_64.rpm"]}}],"references":[{"type":"ADVISORY","url":"https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-1944"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-4424"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-4426"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-5121"}],"database_specific":{"severity":"Critical"}}